Eu3+ Photoluminescence in LiGd(WO4)(2) with Scheelite-Related Structure

摘要

abstract_textpA comparative study of Eu3+ photoluminescence in the Scheelite-type oxides LiGd(WO4)(2) and LiGd(MoO4)(2) is made. From the emission results, it is observed that the D-5(0)- F-7(2) electric dipole transition at 615 nm is predominant in both cases. The critical concentration of Eu3+ is found to be x=0.3 in both LiGd1-xEux(WO4)(2) as well as LiGd1-xEux(MoO4)(2) . The emission intensity of Eu3+ is higher in the tungstate host lattice vis a vis the molybdate. In addition, the emission intensity of Eu3+ in LiGd0.7Eu0.3(WO4)(2) is 3.3 times higher compared to that of Y2O3:0.05Eu(3+) commercial red phosphor./p/abstract_text